crystal tumbler 3d model

Create a precise 3D model of a clear cut-crystal whisky tumbler (lowball glass), isolated, upright, perfectly symmetrical. Size about 102 mm height and 82 mm outer diameter. Shape: short heavy round cylinder with almost straight vertical sides, open top, circular smooth rim, hollow interior, realistic wall thickness, and a very thick solid base (12–15 mm). The outer silhouette must stay cylindrical, not polygonal or organic. Decoration is carved into the outside surface only: the lower half has a repeating diamond-cut pattern made of deep sharp intersecting diagonal grooves, forming 2–3 rows of diamonds around the full circumference. The upper half has evenly spaced tall vertical spear/flame-shaped concave cuts ending below the rim; the rim area stays smooth. Material: clear colorless polished crystal glass, glossy, transparent, refractive. No liquid, ice, logo, handle, stem, or extra objects.